{"id":"MAL-2026-19049","summary":"Malicious code in zhenbaileys (npm)","details":"zhenbaileys is a fork of the Baileys WhatsApp Web library that silently subscribes the installer's own WhatsApp account to WhatsApp Channels chosen by the publisher. When the socket connects, code in lib/Socket/messages-recv.js, lib/Socket/newsletter.js sends the WhatsApp w:mex FOLLOW query and then MUTE, so the channel goes unnoticed, for the channel ID(s) 120363411139192580@newsletter, 120363418691561888@newsletter, 120363420179178031@newsletter (stored as character-code arrays) and a list downloaded at runtime from https://raw.githubusercontent.com/LevviCodeID/Levi4than/refs/heads/main/levvleys.json, using the victim's authenticated session and without telling them. Same behaviour as the PhantomSub family (MAL-2026-17342).","modified":"2026-11-09T23:15:38.395144070Z","published":"2026-10-27T00:00:00Z","database_specific":{"iocs":{"domains":["raw.githubusercontent.com"],"files":[{"paths":["lib/Socket/messages-recv.js"],"digests":{"sha256":"a630a3837b18a88af0d10ad7f7815df9abc87dabae943860dd09fc44e8fc67ab"}},{"digests":{"sha256":"4815585f4c2ff3df3ba902a6893d29c8ae1896035b14207041bcaaa78ced6434"},"paths":["lib/Socket/newsletter.js"]}],"ips":[],"urls":["https://raw.githubusercontent.com/LevviCodeID/Levi4than/refs/heads/main/levvleys.json"]}},"references":[{"type":"PACKAGE","url":"https://www.npmjs.com/package/zhenbaileys"},{"type":"WEB","url":"https://www.ox.security/blog/phantomsub-malicious-npm-campaign-secretly-adds-users-to-whatsapp-spam-channels/"}],"affected":[{"package":{"name":"zhenbaileys","ecosystem":"npm","purl":"pkg:npm/zhenbaileys"},"versions":["1.1.1"],"database_specific":{"cwes":[{"cweId":"CWE-506","description":"The product contains code that appears to be malicious in nature.","name":"Embedded Malicious Code"}],"source":"https://github.com/ossf/malicious-packages/blob/main/osv/malicious/npm/zhenbaileys/MAL-2026-19049.json"}}],"schema_version":"1.9.2","credits":[{"name":"CyberXYZ","contact":["https://cyberxyz.io"],"type":"FINDER"}]}